| Value | Category | Cases | |
|---|---|---|---|
| 1 | light - this includes sandy soils that are easy to | 1 |
0.4%
|
| 2 | medium - this includes loamy soils that are moderately | 200 |
81.6%
|
| 3 | heavy - this includes clayey soils that are hard | 44 |
18%
|
| Sysmiss | 271 |